<template>
    <!-- main.js -->
    <div class="table">
        <div class="container">
            <div class="handle-box">
                <el-button type="primary" size="mini" @click="delAll">批量删除</el-button>
                <el-input prefix-icon="el-icon-search" v-model="select_word" size="mini" placeholder="筛选关键字" class="handle-input"></el-input>
                <el-button type="primary" size="mini" @click="centerDialogVisible = true">添加歌单</el-button>
            </div>
        </div>

        <!----------------------table--------------------->
        <el-table size="mini" border style="width: 100% " height="550" :data="data" @selection-change="handleSelectionChange">
            <el-table-column type="selection" width="40">

            </el-table-column>
            <el-table-column label="歌单图片" width="110" align="center">
                <!--scope当前单元格-->
                <template slot-scope="scope">
                    <div class="songList-img">
                        <img :src="getUrl(scope.row.pic)" style="width: 100%"/>
                    </div>
                    <el-upload :action="uploadUrl(scope.row.id)" :before-upload="beforeAvatorUpload"
                               :on-success="handleAvatorSuccess">
                        <el-button size="mini">更新图片</el-button>
                    </el-upload>
                </template>
            </el-table-column>
            <el-table-column prop="title" label="标题" width="120" align="center"></el-table-column>
            <el-table-column label="简介" align="center">
                <template slot-scope="scope">
                    <p style="height: 100px; overflow: scroll">{{scope.row.introduction}}</p>
                </template>
            </el-table-column>
            <el-table-column prop="style" label="风格" width="120" align="center"></el-table-column>
            <el-table-column label="歌曲管理" width="110" align="center">
                <template slot-scope="scope">
                    <el-button size="mini" @click="songEdit(scope.row.id)">歌曲管理</el-button>
                </template>
            </el-table-column>
            <el-table-column label="评论" width="80px" align="center">
                <template slot-scope="scope">
                    <el-button size="mini" @click="getComment(scope.row.id)">评论</el-button>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="150" align="center">
                <template slot-scope="scope">
                    <el-button size="mini" @click="handleEdit(scope.row)">编辑</el-button>
                    <el-button size="mini" type="danger" @click="handleDelete(scope.row.id)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>
        <div class="pageination">
            <el-pagination
                    background
                    layout="total, prev, pager, next"
                    :current-page="currentPage"
                    :page-size="pageSize"
                    :total="tableData.length"
                    @current-change="handleCurrentChange">

            </el-pagination>
        </div>

        <!----------------------添加模态框--------------------->
        <el-dialog title="添加歌单" :visible.sync="centerDialogVisible" width="400px" center>
            <el-form :model="registerForm" ref="registerForm" label-width="80px">
                <el-form-item prop="title" label="标题" size="mini">
                    <el-input v-model="registerForm.title" placeholder="标题"></el-input>
                </el-form-item>
                <el-form-item prop="introduction" label="简介" size="mini">
                    <el-input v-model="registerForm.introduction" placeholder="简介" type="textarea"></el-input>
                </el-form-item>
                <el-form-item prop="style" label="风格" size="mini">
                    <el-input v-model="registerForm.style" placeholder="风格"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer">
                <el-button size="mini" @click="centerDialogVisible = false">取消</el-button>
                <el-button size="mini" @click="addSongList">确定</el-button>
            </span>
        </el-dialog>

        <!----------------------编辑模态框--------------------->
        <el-dialog title="修改歌单" :visible.sync="editVisible" width="400px" center>
            <el-form :model="form" ref="form" label-width="80px">
                <el-form-item prop="title" label="标题" size="mini">
                    <el-input v-model="form.title" placeholder="标题"></el-input>
                </el-form-item>
                <el-form-item prop="introduction" label="简介" size="mini">
                    <el-input v-model="form.introduction" placeholder="简介" type="textarea"></el-input>
                </el-form-item>
                <el-form-item prop="style" label="风格" size="mini">
                    <el-input v-model="form.style" placeholder="风格"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer">
                <el-button size="mini" @click="editVisible = false">取消</el-button>
                <el-button size="mini" @click="editSave">确定</el-button>
            </span>
        </el-dialog>

        <!----------------------删除模态框--------------------->
        <el-dialog title="删除歌单" :visible.sync="delVisible" width="300px" center>
            <div align="center">
                删除不可恢复，是否确定删除？
            </div>
            <span slot="footer">
                <el-button size="mini" @click="delVisible = false">取消</el-button>
                <el-button size="mini" @click="deleteRow">确定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
    import {getAllSongList, setSongList, updateSongList, delSongList} from '../api/index';
    import {mixin} from "../mixins/index";

    export default {
        name: "SongListPage",
        mixins: [mixin],
        data(){
            return{
                centerDialogVisible: false, //添加弹窗是否显示
                editVisible: false, //编辑弹窗是否显示
                delVisible: false, //删除弹窗是否显示
                registerForm: {     //添加框
                    title: '',
                    introduction: '',
                    style: ''
                },
                form: {     //编辑框
                    title: '',
                    introduction: '',
                    style: ''
                },
                tableData: [],
                tempData: [],
                select_word: '',
                pageSize: 4,     //分页发小
                currentPage: 1,  //当前页
                idx: -1,     //当前选择项
                muletipleSelection: [], //哪些项已经打钩
            }
        },
        //页面加载完成后
        computed:{
            //计算当前搜索结果里的数据
            data(){
                return this.tableData.slice((this.currentPage - 1) * this.pageSize, this.currentPage * this.pageSize);
            }
        },
        watch:{
            //搜索框里面的内容发生变化的时候，搜索结果table列表内容跟着他的内容发生改变
            select_word: function () {
                if(this.select_word === ''){
                    this.tableData = this.tempData;
                }else{
                    this.tableData = [];
                    for(let item of this.tempData){
                        if(item.title.includes(this.select_word)){
                            this.tableData.push(item)
                        }
                    }
                }
            }
        },
        created(){
            this.getData();
        },
        methods:{
            //获取当前页
            handleCurrentChange(value){
                this.currentPage = value;
            },
            //查询所有歌单
            getData(){
                this.tempData = [];
                this.tableData = [];
                getAllSongList().then(res => {
                    this.tempData = res;
                    this.tableData = res;
                    this.currentPage = 1;
                });
            },
            //添加歌单
            addSongList(){
                let params = new URLSearchParams();
                params.append('title', this.registerForm.title);
                params.append('pic', '/img/songListPic/auto.jpg');
                params.append('introduction', this.registerForm.introduction);
                params.append('style', this.registerForm.style);
                setSongList(params)
                    .then(res => {
                        if(res.code === 1){
                            this.getData();
                            mixin.methods.notify("添加成功", "success");
                        } else{
                            mixin.methods.notify("添加失败", "error");
                        }
                    })
                    .catch(err => {
                        console.log(err);
                    });
                this.centerDialogVisible = false;
            },
            //弹出编辑页面
            handleEdit(row){
                this.editVisible = true;
                this.form = {
                    id: row.id,
                    title: row.title,
                    introduction: row.introduction,
                    style: row.style
                }
            },
            //保存编辑页面修改的数据
            editSave(){
                let params = new URLSearchParams();
                params.append("id", this.form.id);
                params.append('title', this.form.title);
                params.append('introduction', this.form.introduction);
                params.append('style', this.form.style);
                updateSongList(params)
                    .then(res => {
                        if(res.code === 1){
                            this.getData();
                            mixin.methods.notify("修改成功", "success");
                        } else{
                            mixin.methods.notify("修改失败", "error");
                        }
                    })
                    .catch(err => {
                        console.log(err);
                    });
                this.editVisible = false;
            },
            //删除一个歌单
            deleteRow(){
                console.log(this.idx);
                delSongList(this.idx)
                    .then(res => {
                        if(res){
                            this.getData();
                            mixin.methods.notify("删除成功", "success");
                        } else{
                            mixin.methods.notify("删除失败", "error");
                        }
                    })
                    .catch(err => {
                        console.log(err);
                    });
                this.delVisible = false;
            },
            //更新图片
            uploadUrl(id){
                return `${this.$store.state.HOST}/songList/updateSongListPic?id=${id}`;
            },
            //转向歌曲管理页面
            songEdit(id){
                this.$router.push({path:`/ListSong`, query:{id}});
            },
            //转向改歌单的评论列表
            getComment(id){
                this.$router.push({path: '/Comment', query: {id}});
            }
        }
    }
</script>

<style scoped>
    .handle-box{
        margin-bottom: 20px;

    }
    .songList-img{
        width: 100%;
        height: 80px;
        border-radius: 5px;
        margin-bottom: 5px;
        overflow: hidden;
    }
    .handle-input{
        width: 300px;
        display: inline-block;
        margin: 0 10px;
    }
    .pageination{
        display: flex;
        justify-content: center;

    }
</style>